The resistivity of material is 10 ohm m at 30° C. When the temperature drops to 28°C then resistivity drops by 2 ohm m . The temperature coefficient of resistivity material is
a. 10 K^-1
b. 2 K^-1
c. 0.1 K^-1
d. 1.0 K^-1
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I think that the answer will be b)
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